/**
 * Copyright (C) 2015 ogaclejapan
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.wiser.tab.smart;

import android.view.View;
import android.view.ViewGroup;

import androidx.core.view.MarginLayoutParamsCompat;
import androidx.core.view.ViewCompat;

/**
 * @author Wiser
 * @version 版本
 */
final class Utils {

	static int getMeasuredWidth(View v) {
		return (v == null) ? 0 : v.getMeasuredWidth();
	}

	static int getWidth(View v) {
		return (v == null) ? 0 : v.getWidth();
	}

	static int getWidthWithMargin(View v) {
		return getWidth(v) + getMarginHorizontally(v);
	}

	static int getStart(View v) {
		return getStart(v, false);
	}

	static int getStart(View v, boolean withoutPadding) {
		if (v == null) {
			return 0;
		}
		if (isLayoutRtl(v)) {
			return (withoutPadding) ? v.getRight() - getPaddingStart(v) : v.getRight();
		} else {
			return (withoutPadding) ? v.getLeft() + getPaddingStart(v) : v.getLeft();
		}
	}

	static int getEnd(View v) {
		return getEnd(v, false);
	}

	static int getEnd(View v, boolean withoutPadding) {
		if (v == null) {
			return 0;
		}
		if (isLayoutRtl(v)) {
			return (withoutPadding) ? v.getLeft() + getPaddingEnd(v) : v.getLeft();
		} else {
			return (withoutPadding) ? v.getRight() - getPaddingEnd(v) : v.getRight();
		}
	}

	static int getPaddingStart(View v) {
		if (v == null) {
			return 0;
		}
		return ViewCompat.getPaddingStart(v);
	}

	static int getPaddingEnd(View v) {
		if (v == null) {
			return 0;
		}
		return ViewCompat.getPaddingEnd(v);
	}

	static int getPaddingHorizontally(View v) {
		if (v == null) {
			return 0;
		}
		return v.getPaddingLeft() + v.getPaddingRight();
	}

	static int getMarginStart(View v) {
		if (v == null) {
			return 0;
		}
		ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams) v.getLayoutParams();
		return MarginLayoutParamsCompat.getMarginStart(lp);
	}

	static int getMarginEnd(View v) {
		if (v == null) {
			return 0;
		}
		ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams) v.getLayoutParams();
		return MarginLayoutParamsCompat.getMarginEnd(lp);
	}

	static int getMarginHorizontally(View v) {
		if (v == null) {
			return 0;
		}
		ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams) v.getLayoutParams();
		return MarginLayoutParamsCompat.getMarginStart(lp) + MarginLayoutParamsCompat.getMarginEnd(lp);
	}

	static boolean isLayoutRtl(View v) {
		return ViewCompat.getLayoutDirection(v) == ViewCompat.LAYOUT_DIRECTION_RTL;
	}

	private Utils() {}

}
